Finding the Fourth Proportional to 208,221.65, 287,319.48 and 122,149.23
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Solution
The fourth proportional to 208,221.65, 287,319.48 and 122,149.23 is: 168,550.45
Step by Step Solution
- Step 1: Write the proportion equation
208,221.65 : 287,319.48 = 122,149.23 : x - Step 2: Convert to fraction form
208,221.65/287,319.48 = 122,149.23/x - Step 3: Cross multiply
208,221.65x = 287,319.48 × 122,149.23 - Step 4: Simplify right side
208,221.65x = 35,095,852,635.25 - Step 5: Solve for x
x = 35,095,852,635.25/208,221.65 - Step 6: Final answer
x = 168,550.45
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.